There is a particularly loud inhalation sound when stepping on the accelerator again.

This is the abnormal sound when the engine naturally sucks vacuum. When the pedal is deep, the engine will reach a certain speed immediately, and it is necessary to provide enough internal gas mixing. This rapid inhalation will form a certain degree of vacuum, and sound will be generated during the formation process.

The working principle is that air enters the combustion chamber at atmospheric pressure without any supercharger, that is, without a turbine.

One of the natural air intake modes of vehicles uses atmospheric pressure to push air into the combustion chamber without any supercharger, thus providing power support for vehicles.

Extended data:

Precautions:

The difference between naturally aspirated engine and turbocharged engine;

1. At the same displacement, turbocharging is more powerful than self-priming.

Under the same displacement, turbocharged engines are obviously more powerful than naturally aspirated engines, because most turbocharged engines have smaller displacement.

There is little difference in power between naturally aspirated engines with larger displacement. If you don't like the soft power output of natural inspiration, then a rough vortex propulsion is your best choice.

2. Turbocharging is more expensive than self-priming.

In terms of maintenance cost, turbocharging power may cause performance and reliability to decay faster than suction power, depending on the operating environment.

Steam turbines work in high temperature and high pressure environment, and the later maintenance cost is often slightly higher than that of self-priming.

3. With the same displacement, the turbocharged engine has higher fuel economy at high speed.

In terms of fuel consumption, at the same speed, if your vehicle is often used in urban areas, the performance of turbocharged fuel consumption may not be as good as that of naturally aspirated vehicles. However, if high speed is often used, fuel economy is an advantage of turbocharging.